Process for the preparation of polyarylene sulphide with monohalogeno
aromatic compound and mono mercapto compound
    31.
    发明授权
    Process for the preparation of polyarylene sulphide with monohalogeno aromatic compound and mono mercapto compound 失效
    用单卤代芳族化合物和单巯基化合物制备聚芳硫醚的方法

    公开(公告)号:US4760127A

    公开(公告)日:1988-07-26

    申请号:US893601

    申请日:1986-08-06

    CPC分类号: C08G75/0254 C08G75/0231

    摘要: The invention relates to a process for the preparation of optionally branched, high molecular weight polyarylene sulphides with melt viscosities which can be established within a defined range and low corrosion.These polyarylene sulphides have been obtained by reacting alkali metal sulphides, if appropriate mixed with alkali metal bisulphides and reaction accelerators, with dihalogenoaromatics and polyhalogenoaromatics, with the addition of monohalogen and monomercapto compounds.

    摘要翻译: 本发明涉及一种制备任选支化的高分子量聚亚芳基硫醚的方法,其熔融粘度可以在规定的范围内建立并具有低腐蚀性。 这些聚亚芳基硫化物是通过使碱金属硫化物与碱金属二硫化物和反应促进剂混合,与二卤代芳族化合物和多卤代芳族化合物反应,加入单卤素和单体巯基化合物而得到的。

    Recovery of high-quality polycarbonate from polycarbonate scrap
    36.
    发明授权
    Recovery of high-quality polycarbonate from polycarbonate scrap 失效
    从聚碳酸酯废料回收高品质聚碳酸酯

    公开(公告)号:US4212774A

    公开(公告)日:1980-07-15

    申请号:US34840

    申请日:1979-04-30

    申请人: Karsten Idel

    发明人: Karsten Idel

    摘要: The present invention relates to a process for the recovery of aromatic, high-molecular weight, thermoplastic polycarbonates from polycarbonate scrap, it being possible for the polycarbonate scrap to be either in the pure form as transparent naturally-occurring material, or mixed together with organic and, especially, inorganic dyestuffs and/or other additives, or in the form of a blend with other thermoplastic materials.

    摘要翻译: 本发明涉及从聚碳酸酯废料中回收芳族,高分子量的热塑性聚碳酸酯的方法,聚碳酸酯废料可以是纯的形式作为透明天然存在的材料,或与有机物混合在一起 特别是无机染料和/或其它添加剂,或与其它热塑性材料的混合物形式。